85331677 has 2 divisors, whose sum is σ = 85331678. Its totient is φ = 85331676.

The previous prime is 85331647. The next prime is 85331693. The reversal of 85331677 is 77613358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63904036 + 21427641 = 7994^2 + 4629^2 .

It is a cyclic number.

It is not a de Polignac number, because 85331677 - 2⁷ = 85331549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85331647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42665838 + 42665839.

It is an arithmetic number, because the mean of its divisors is an integer number (42665839).

Almost surely, 2^85331677 is an apocalyptic number.

It is an amenable number.

85331677 is a deficient number, since it is larger than the sum of its proper divisors (1).

85331677 is an equidigital number, since it uses as much as digits as its factorization.

85331677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 85331677 is about 9237.5146549275. The cubic root of 85331677 is about 440.2541180154.

The spelling of 85331677 in words is "eighty-five million, three hundred thirty-one thousand, six hundred seventy-seven".